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Different & Bizarre Profile Symbol???

Different & Bizarre Profile Symbol???

Different & Bizarre Profile Symbol???

(OP)
Has any one seen this GD&T symbol?  It was on a print from Germany.  See Attachment.

RE: Different & Bizarre Profile Symbol???

(OP)
We found it!!.... It's a new drawing..
It's a GS90013:2002-07 spec. from Germany.  
It means "For connecting faces and function fasces as per GS 91006-1 Supplement 1"  

I appreciate your help!  Thank you.....
 

RE: Different & Bizarre Profile Symbol???

But what is the difference in interpetation from a regular surface profile?

Peter Stockhausen
Senior Design Analyst (Checker)
Infotech Aerospace Services
www.infotechpr.net

RE: Different & Bizarre Profile Symbol???

(OP)
A normal profile of a surface pertains to the part in the part print only.  This is calling a profile of a mating surface of a different part on a different print.  I know it's weird, I've never seen anything like that either.  

RE: Different & Bizarre Profile Symbol???

Why is the fact that it mates something else relevant?

Does that mean without it, the part has to meet tolerance but with it, the part really really really has to meat tolerance?

Wierd, if that's the explanation.

RE: Different & Bizarre Profile Symbol???

So you have to have the print of this part in hand to be able to make the mating part?

"Good to know you got shoes to wear when you find the floor." - Robert Hunter
 

RE: Different & Bizarre Profile Symbol???

Do you have the complete standard and does it give examples of how it should be interpreted like Y14.5 does?

Peter Stockhausen
Senior Design Analyst (Checker)
Infotech Aerospace Services
www.infotechpr.net

RE: Different & Bizarre Profile Symbol???

(OP)
Nope... that's all I have.  This part was only a quote.

RE: Different & Bizarre Profile Symbol???

My suggestion for your quote is to assume that the meaning is the same as Y14.5 for a surface profile, and state that in your quote.

Peter Stockhausen
Senior Design Analyst (Checker)
Infotech Aerospace Services
www.infotechpr.net

RE: Different & Bizarre Profile Symbol???

In my view, things like this come out of the European guidelines because they are still focused on precision rather than accuracy.  

Precision is the ability for one factory to make parts that fit together (make it so that it fits other parts we build).  

Accuracy is the ability for any factory to make parts that fit together (tolerances are absolute limits and consistant regardless of location or processes, so parts made anywhere can be used universal for the same design).

It is a bit ironic that this is the direction the engineering ISO and DIN standards have taken since the rest of ISO relies on the ideal of "say what you do, do what you say".  When the engineering related ISO guidelines are employed, it's more of "say what you hope for, hope to get what you want"

(When their companies go through a million lawsuits about confused meanings of the standards, I'm guessing they will slowly move closer to the American POV (i.e., Rule #1 and the removal of clauses about things being ok if they happen to fit).)

Matt Lorono
CAD Engineer/ECN Analyst
Silicon Valley, CA
Lorono's SolidWorks Resources
Co-moderator of Solidworks Yahoo! Group
and Mechnical.Engineering Yahoo! Group

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